CN105004587B - A kind of preparation of Ni-base Superalloy Powder rapidly solidification sample and test method - Google Patents
A kind of preparation of Ni-base Superalloy Powder rapidly solidification sample and test method Download PDFInfo
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Abstract
The present invention be a kind of Ni-base Superalloy Powder rapidly solidification sample preparation and test method, step it is as follows：(1) superalloy powder is prepared using inert gas atomizer or plasma rotating electrode process；(2) alloy powder of certain particle size after screening is put into jacket in stainless steel tube, degasification and soldering and sealing；(3) powder in jacket is loosely consolidated using high temperature insostatic pressing (HIP), temperature is far below conventional hip moulding temperature, and jacket after high temperature insostatic pressing (HIP) is processed into the bright cylindric sample of appearance by (4)；(5) cylinder sample is put into electric current and quickly heats heat simulating tester, sample is rapidly heated to different temperatures, insulation, cooling with different heating speed under protective atmosphere, records temperature curve；(6) sample is cut, obtains sample microstructure, phase structure and composition transfer data.This method can determine microstructure changing rule when superalloy powder melts under different temperatures and heating rate, solidified, for instructing material and the thermal process selection of superalloy powder.
Description
The present invention is preparation and the test method of a kind of Ni-base Superalloy Powder rapidly solidification sample, belongs to powder metallurgy
Alloy field.
Background technology
Gas turbine technology be the important prerequisite and bottleneck of China's aircraft development, all the time high temperature alloy and its part into
Type technology is referred to as the heart of gas turbine and is used to manufacture gas turbine hot-end component.At present, powder metallurgy superalloy is answered
For in advanced gas turbine engines, powder to block materials will to directly influence zero in the microstructure evolution of forming process
The military service performance of part and life-span, particularly more progressively start the advanced Quick-forming work applied to high-temperature alloy part
Skill, such as 3D printing and injection shape, and are related to Microstructural evolution of the alloy powder in high speed heating-cooling process, these physics
Formulation of the metallurgical information to technological parameter has very big technological guidance's meaning.It was directed in the past under the original bulky powder high temperature of alloy
The method of structural transformation mainly uses common heating stove heat, and its shortcoming is：First, programming rate is very slow, with technical process
Virtual condition differs greatly；Second, programming rate is difficult control, can not meet the need of different temperatures undertissue development law measure
Will；3rd, the optional space of speed control that cools under protective atmosphere is limited；4th, it is more difficult to realize the accurate record of quick response.
The content of the invention
The present invention is exactly to design that to provide a kind of superalloy powder fast for above-mentioned the deficiencies in the prior art
Fast thawing coagulates preparation and the test method of sample, is melted the purpose is to determine superalloy powder under different temperatures and heating rate
Microstructure changing rule when changing, solidifying, this kind of changing rule can be used for instructing superalloy powder rapid melting and solidification process phase
Close the selection of thermal process parameter and material.
The purpose of the present invention is achieved through the following technical solutions：
The step of preparation of this kind of superalloy powder rapidly solidification sample and test method is：
1. preparation and the test method of a kind of Ni-base Superalloy Powder rapidly solidification sample, it is characterised in that：This method
Step is：
(1) superalloy powder is prepared using inert gas atomizer or plasma rotating electrode process；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 1 μm~200 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, hip temperature is higher than the powder
Temperature alloy routine hip moulding temperature is low 200 DEG C~600 DEG C；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into cylindric, sample is turned into；
(5) sample is put into heat simulating tester, quickly risen sample with different heating speed under protective atmosphere
For temperature to different temperatures, insulation, cooling, heating rate scope be 5 DEG C/s~1000 DEG C/s, holding temperature scope for 1000 DEG C~
1400 DEG C, soaking time is 1s~6000s, is cooled to power off air cooling~water quenching, record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
The advantages of technical solution of the present invention is：
(1) the original loose powder of alloy be not used to the hot modeling test machine of resistance/electric current mode of heating can to realize
Big speed temperature-rise period is controlled, and powder in jacket is carried out in the present invention to be far below conventional hip moulding temperature and alloyed powder
Loose consolidation under last phase transition temperature, had both maintained the tissue signature of single starting powder, and met testing machine sample simultaneously
State is the requirement of block materials；
(2) sample prepared by above method can realize that alloy powder is carried out under protective atmosphere in heat simulating tester
Programming rate, holding temperature and time it is controllable consolidation experiment, be difficult to reality especially for the other methods of alloy powder
Existing controllable big speed heating, the theoretical heating rate of existing equipment can realize the accurate of quick response up to 10000 DEG C/s
Record；
(3) tissue, structure and the composition that the alloy powder of different temperatures is warming up to by the big speed of thermo dynamic analogy machine can be with
Intuitively observe and characterize by means such as microscope, EBSD, X ray and electron probes, for instructing to be based on superalloy powder
The actual production technique of quick heat processing technique is adapted selection (such as superalloy powder 3D printing and the injection of material with technique
Shaping process).
Embodiment
Technical solution of the present invention is described in further details below in conjunction with embodiment.
Embodiment 1
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 45 μm~63 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 6mm, length 40mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 1000 DEG C/s firing rate will be tried
Sample is rapidly heated to 1000 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 2
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 45 μm~63 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 6mm, length 40mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 1000 DEG C/s firing rate will be tried
Sample is rapidly heated to 1100 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 3
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 45 μm~63 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 6mm, length 40mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 1000 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 4
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 45 μm~63 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 6mm, length 40mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 1000 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 10s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 5
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 63 μm~75 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 6
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 63 μm~75 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1000 DEG C, soaking time 2s, water cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 7
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 63 μm~75 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1100 DEG C, soaking time 2s, water cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 8
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 63 μm~75 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 800 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 2s, water cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 9
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 1 μm~45 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature range of high temperature insostatic pressing (HIP) is 800
DEG C (being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 10
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 2s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 11
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 5 DEG C/s firing rate is by sample
It is rapidly heated to 1200 DEG C, soaking time 2s, water cooling after power-off, record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 12
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 1s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 13
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1200 DEG C, soaking time 6000s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 14
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1350 DEG C, soaking time 1s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Embodiment 15
The step of preparation of the superalloy powder rapidly solidification sample and test method is：
The step of preparation of the controllable rapidly solidification sample of superalloy powder and test method is：
(1) superalloy powder is prepared using argon gas atomization, the weight percent composition of alloy is：12.9Cr-20.2Co-
2.0W-3.9Mo-3.5Al-3.7Ti-1.0Nb-2.3Ta-0.02C-0.03B-0.05Zr- surpluses are Ni；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the granularity of alloy powder
Scope is 100 μm~150 μm；
(3) alloy powder in jacket is loosely consolidated using hot isostatic pressing method, the temperature of high temperature insostatic pressing (HIP) is 900 DEG C
(being far below 1170-1190 DEG C of the alloy routine hip temperature)；
(4) by after high temperature insostatic pressing (HIP), by jacket sharp processing into the cylindric of appearance light, sample, the diameter of sample are turned into
For 10mm, length 50mm；
(5) sample is put into heat simulating tester, under argon atmosphere, 700 DEG C/s firing rate will be tried
Sample is rapidly heated to 1400 DEG C, soaking time 1s, air cooling after power-off, and record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
Claims (1)
1. preparation and the test method of a kind of Ni-base Superalloy Powder rapidly solidification sample, it is characterised in that：This method step
It is：
(1) superalloy powder is prepared using inert gas atomizer or plasma rotating electrode process；
(2) alloy powder after screening is put into jacket in stainless steel tube, degasification and soldering and sealing, the particle size range of alloy powder
For 1 μm~200 μm；
(3) the original loose powder of alloy is not used to the controllable big speed liter of hot modeling test machine of resistance/electric current mode of heating
Temperature, alloy powder in jacket is carried out using hot isostatic pressing method to be far below conventional high temperature insostatic pressing (HIP) forming temperature and alloy powder phase transformation
The loose consolidation of temperature, hip temperature are lower by 200 DEG C~600 than the powder metallurgy superalloy routine hip moulding temperature
DEG C, the tissue signature of single starting powder was both maintained, and meet the requirement that testing machine sample state is block materials simultaneously；
(4) after high temperature insostatic pressing (HIP), by jacket sharp processing into cylindric, sample is turned into；
(5) sample is put into heat simulating tester, under protective atmosphere with different heating speed by sample be rapidly heated to
Different temperatures, insulation, cooling, heating rate scope are 5 DEG C/s~1000 DEG C/s, and holding temperature scope is 1000 DEG C~1400
DEG C, soaking time is 1s~6000s, is cooled to power off air cooling~water quenching, record temperature changes over time curve；
(6) sample is cut, obtains the microstructure, phase structure and composition transfer data of sample.
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| CN110666175B (en) * | 2019-10-31 | 2022-03-04 | 西安欧中材料科技有限公司 | Hot isostatic pressing forming method of nickel-based high-temperature alloy powder |
| CN111238956B (en) * | 2020-01-08 | 2021-08-27 | 中南大学 | High-throughput method for powder alloy preparation and hot consolidation forming process development |
| CN111579323B (en) * | 2020-05-09 | 2022-11-01 | 中国航发北京航空材料研究院 | High-throughput preparation and test method of powder superalloy inclusion sample |
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